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1、酚醛树脂（phenolicresin）1.introduction:Phenolicresinistheworld'sfirstfoundandthermosettingsyntheticresinindustry,asrawmaterials,synthesisprocessandconvenient,hasthemechanicalstrengthandgoodheatresistance,hasexcellentmechanicalpropertiesandelectricalproperties,hasthec
2、haracteristicsofhightemperaturecreepresistanceheatresistance,flameretardant,itisstillwidelyusedinplastics,frictionmaterial,adhesive,coating,castingresin,foamandotherfields.However,withtherapiddevelopmentofindustrialeconomy,moreandmorerequirementsfortheproperties
3、ofphenolicresinhavebeenputforward.Thereactionmechanism,structureandpropertiesofphenolicresinarestilldeeplystudied.Manyachievementshavebeenmadeintoughening,reinforcingandmodifyingofphenolicresin.Avarietyofphenoliccompositematerialshavealsobeenlistedashumanenginee
4、ringplasticsseries.Phenolichydroxylgroupsandmethylenegroupsinphenolicresinstructureareeasilyoxidized,sothattheirheatresistanceisaffected,andphenolicresinisbrittleaftercuring.Therefore,untilnow,howtoimprovephenolicresinandapplyittoindustryisstillanimportanttopic.
5、2.technologydevelopment:Thedevelopmentofbakelite,afteralltothemodificationofphenolicresinmodifiedphenolicresin,nowmainlyinthefollowingaspects:1.usingnaturalplantoilmodifiedphenolicresin;2.usingthermalplasticresinmodifiedphenolicresin;3.lowmolecularchemicalmodifi
6、edphenolicresin;modifiedphenolicresin4.thermosettingresin;5.rubbermodifiedphenolicresin;6.nanomaterialtoughenedphenolicresin;7.thermotropicliquidcrystaltoughenedphenolicresin.2.1naturalvegetableoilmodifiedphenolicresinThenaturalplantoilmodifiedphenolicresinische
7、micallymodified,flexiblelongchainmolecularstructureinvegetableoilcontainingdoublebondorconjugatedtriplebond,bydoubleortriplebondphenolicresinsynthesizedinthereactionprocess,theflexiblelongchainintorigidphenolicmoleculechain,playintheroleoftoughening,therebyimpro
8、vingthephenolicresinbrittle.2.1.1cashewnutshelloilmodifiedphenolicresinCashewnutshelloilisaby-productofcashewprocessing,anditisaveryrichbiologicalresource.Comparedwit
